Finding the Fourth Proportional to 122,316.99, 168,725.76 and 76,922.97
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Solution
The fourth proportional to 122,316.99, 168,725.76 and 76,922.97 is: 106,108.62
Step by Step Solution
- Step 1: Write the proportion equation
122,316.99 : 168,725.76 = 76,922.97 : x - Step 2: Convert to fraction form
122,316.99/168,725.76 = 76,922.97/x - Step 3: Cross multiply
122,316.99x = 168,725.76 × 76,922.97 - Step 4: Simplify right side
122,316.99x = 12,978,886,574.71 - Step 5: Solve for x
x = 12,978,886,574.71/122,316.99 - Step 6: Final answer
x = 106,108.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.